Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '587072a4e43da228b344c81f3ae38a2b15784c0172d430defa8b96c3bca4434a' 
  AND token = 'e0vEKTowveWGtrdkvib/3v61ZSNjJKdWoBeOpQASwpY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}